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A083072 A subdiagonal of number array A083064. 2
1, 4, 29, 286, 3511, 51668, 888889, 17538454, 390892451, 9720791092, 267004296901, 8031916155134, 262709978263279, 9285541905849316, 352765522430193905, 14337731083770642838, 620867368421052631579 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..16.

FORMULA

a(n) = ((n+2)*(n+4)^n + 1)/(n+3).

CROSSREFS

Cf. A083071, A083069.

Sequence in context: A294160 A160885 A182356 * A302586 A302609 A181197

Adjacent sequences:  A083069 A083070 A083071 * A083073 A083074 A083075

KEYWORD

easy,nonn

AUTHOR

Paul Barry, Apr 21 2003

STATUS

approved

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Last modified January 27 22:51 EST 2022. Contains 350654 sequences. (Running on oeis4.)