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A173050 Triangle, read by rows, given by [0,1,1,1,1,1,1,1,...] DELTA [1,0,1,0,2,0,3,0,4,0,5,0,6,0,...] where DELTA is the operator defined in A084938. 0
1, 0, 1, 0, 1, 1, 0, 2, 3, 1, 0, 5, 10, 6, 1, 0, 14, 36, 31, 10, 1, 0, 42, 135, 156, 77, 15, 1, 0, 132, 518, 771, 534, 169, 21, 1, 0, 429, 2015, 3745, 3451, 1610, 345, 28, 1, 0, 1430, 7906, 17897, 21094, 13569, 4537, 676, 36, 1, 0, 4862, 31195, 84278, 123203, 103986 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,8

LINKS

Table of n, a(n) for n=0..60.

FORMULA

Sum_{k, 0<=k<=n}T(n,k) = A074664(n+1).

EXAMPLE

Triangle begins : 1 ; 0,1 ; 0,1,1 ; 0,2,3,1 ; 0,5,10,6,1 ; 0,14,36,31,10,1 ; ...

CROSSREFS

Cf. A000108

Sequence in context: A332645 A081247 A298753 * A172380 A144633 A264428

Adjacent sequences:  A173047 A173048 A173049 * A173051 A173052 A173053

KEYWORD

nonn,tabl

AUTHOR

Philippe Deléham, Feb 08 2010

EXTENSIONS

Corrected by Philippe Deléham, Feb 08 2010

STATUS

approved

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Last modified June 7 01:26 EDT 2020. Contains 334836 sequences. (Running on oeis4.)