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A285067 Row sums of triangle A285066. 2
1, 5, 57, 989, 22833, 658805, 22810857, 921455309, 42540129633, 2209407621605, 127500056700057, 8093522778736829, 560471288461196433, 42046635718027122005, 3396986478841654717257, 294048932819502579461549, 27150267978072875530135233, 2663529874012507049631576005 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

See A285066 for details.

LINKS

Table of n, a(n) for n=0..17.

FORMULA

a(n) = Sum_{m=0..n} A285066(n, m),  n >= 0.

E.g.f.: exp(x)/(2 - exp(4*x)).

a(n) ~ n! * 2^(2*n - 3/4) / log(2)^(n+1). - Vaclav Kotesovec, Apr 19 2017

CROSSREFS

Cf. A285066, A141413(n+2) (alternating row sums).

Sequence in context: A277831 A223382 A155539 * A234293 A244288 A009480

Adjacent sequences:  A285064 A285065 A285066 * A285068 A285069 A285070

KEYWORD

nonn,easy

AUTHOR

Wolfdieter Lang, Apr 19 2017

STATUS

approved

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Last modified October 16 15:31 EDT 2019. Contains 328101 sequences. (Running on oeis4.)