A295227 - OEIS

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A295227

a(n) = sum_{k=0,...,[n/2]} s(n-k,k)^2, s = A048994, Stirling numbers of the first kind.

1, 0, 1, 1, 5, 45, 698, 16936, 594702, 28564021, 1799119626, 143863537330, 14236046853139, 1707698666758297, 244136528082097062, 41008147506862052681, 7995945735393199219626, 1791074412870104676689001, 456745672286592586379503743

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

OFFSET

0,5

LINKS

Table of n, a(n) for n=0..18.

Edyta Hetmaniok, Barbara Smoleń, Roman Wituła, The Stirling triangles, Proceedings of the Symposium for Young Scientists in Technology, Engineering and Mathematics (SYSTEM 2017), Kaunas, Lithuania, April 28, 2017, p. 35-41.

CROSSREFS

Sequence in context: A113382 A304919 A132688 * A167812 A155104 A243951

Adjacent sequences: A295224 A295225 A295226 * A295228 A295229 A295230

KEYWORD

nonn

AUTHOR

Eric M. Schmidt, Nov 18 2017

STATUS

approved