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A067405 Fifth column of triangle A067402. 2
1, 9, 225, 5625, 140625, 3515625, 87890625, 2197265625, 54931640625, 1373291015625, 34332275390625, 858306884765625, 21457672119140625, 536441802978515625, 13411045074462890625, 335276126861572265625 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..15.

FORMULA

a(n)= A067402(n+4, 4). a(n)= 9*25^(n-1), n>=1, a(0)=1.

G.f. (1-16*x)/(1-25*x).

CROSSREFS

Cf. A067404 (fourth column), A067406 (sixth column), A009969 (powers of 25).

Sequence in context: A069075 A218659 A012054 * A063386 A063392 A012831

Adjacent sequences:  A067402 A067403 A067404 * A067406 A067407 A067408

KEYWORD

nonn,easy

AUTHOR

Wolfdieter Lang, Jan 25 2002

STATUS

approved

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Last modified September 29 18:39 EDT 2022. Contains 357090 sequences. (Running on oeis4.)