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A083071 First subdiagonal of number array A083064. 5
1, 3, 19, 173, 2001, 28087, 465011, 8888889, 192922993, 4690709411, 126370284195, 3738060156613, 120478742327009, 4203359652212463, 157854212399438371, 6349779403743490289, 272416890591642213921, 12417347368421052631579 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

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

FORMULA

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

CROSSREFS

Cf. A083069, A083070.

Sequence in context: A256493 A275283 A349768 * A305459 A045531 A129481

Adjacent sequences:  A083068 A083069 A083070 * A083072 A083073 A083074

KEYWORD

easy,nonn

AUTHOR

Paul Barry, Apr 21 2003

STATUS

approved

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Last modified January 26 13:09 EST 2022. Contains 350598 sequences. (Running on oeis4.)