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A083084 A diagonal of number array A083075. 3
1, 9, 141, 2893, 73081, 2200977, 77189509, 3095295861, 139872233073, 7039013063065, 390656716635901, 23714578436644509, 1563646420268423401, 111315499088924632353, 8511391223995285616373, 695805743909499121660357 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..300

FORMULA

a(n) = ((n+3)*(2n+9)^n + 1)/(n+4).

PROG

(MAGMA) [((n+3)*(2*n+9)^n+1)/(n+4): n in [0..20]]; // Vincenzo Librandi, Nov 12 2011

CROSSREFS

Cf. A083083, A083082.

Sequence in context: A137051 A137059 A263966 * A187402 A303147 A317354

Adjacent sequences:  A083081 A083082 A083083 * A083085 A083086 A083087

KEYWORD

easy,nonn

AUTHOR

Paul Barry, Apr 23 2003

STATUS

approved

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Last modified July 2 07:13 EDT 2020. Contains 335398 sequences. (Running on oeis4.)