A134182 - OEIS

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A134182

10^n-th difference between cumulative prime and odd sums.

2

38, 14478, 2688838, 396250152, 52261798440, 6472980453364, 770530574266708

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Chai Wah Wu, Table of n, a(n) for n = 1..23 (using terms from A006988 and A099824)

FORMULA

Beginning at 3, compute the sums of the prime and odd sequences at 10^n and take the difference.

a(n) = A099824(n)+prime(10^n+1)-(10^n*(10^n+2))-2. - Chai Wah Wu, Mar 30 2020

EXAMPLE

a(2)=14478 because at 10^2, 100 sums of primes and odds, the prime sum is 24678, the odd sum is 10200 and the difference is 14478

PROG

(UBASIC) 10 N=1:A=2 20 A=nxtprm(A):B=B+A 30 N=N+2:D=D+N 40 if C=9 then print A; N; B; D; B-D:stop 50 C=C+1: if C<10 then 20

CROSSREFS

Cf. A006988, A071148, A005563, A099824, A134181.

Sequence in context: A183581 A030260 A145122 * A110017 A181016 A103479

Adjacent sequences: A134179 A134180 A134181 * A134183 A134184 A134185

KEYWORD

more,nonn

AUTHOR

Enoch Haga, Oct 13 2007

STATUS

approved