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A186022 Diagonal sums of number triangle A186020. 1
1, 1, 3, 6, 19, 62, 239, 1013, 4723, 23870, 129779, 753784, 4651285, 30349577, 208575027, 1504582526, 11358446495, 89501837358, 734420232291, 6262593615501, 55392254339667, 507335283474158, 4804245661175599, 46971060027956608, 473534995965134505, 4916730522706507665 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..25.

CROSSREFS

Sequence in context: A345244 A052393 A024607 * A058818 A184937 A215817

Adjacent sequences:  A186019 A186020 A186021 * A186023 A186024 A186025

KEYWORD

nonn

AUTHOR

Paul Barry, Feb 10 2011

STATUS

approved

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Last modified October 16 20:36 EDT 2021. Contains 348047 sequences. (Running on oeis4.)