OFFSET
1,2
COMMENTS
As a flat sequence, this is a permutation of the positive integers with inverse A364775.
LINKS
Rémy Sigrist, Colored representation of the parity of A(n, k) for n, k <= 1000 (where black pixels denote odd terms)
Rémy Sigrist, PARI program
FORMULA
A(1, k) = 2^(k-1).
A(n, 1) = 2^n - 1.
EXAMPLE
Array A(n, k) begins:
n\k| 1 2 3 4 5 6 7 8 9 10 11 12
---+--------------------------------------------------------------
1| 1 2 4 8 16 32 64 128 256 512 1024 2048
2| 3 5 6 10 12 20 24 40 48 80 96 160
3| 7 11 9 14 18 22 28 36 44 56 72 88
4| 15 23 13 17 25 26 30 34 46 50 52 60
5| 31 47 19 21 33 38 42 62 66 76 84 94
6| 63 95 27 29 37 41 49 54 58 74 82 98
7| 127 191 39 35 51 45 57 69 70 78 90 102
8| 255 383 55 43 67 53 61 73 86 101 105 106
9| 511 767 79 59 75 65 85 81 89 113 118 121
10| 1023 1535 111 71 103 77 99 109 93 142 145 154
11| 2047 3071 159 87 135 83 115 125 97 149 165 166
12| 4095 6143 223 119 151 91 123 139 117 153 169 177
PROG
(PARI) See Links section.
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Rémy Sigrist, Aug 06 2023
STATUS
approved