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A088158 Square table T(n,k), read by antidiagonals, that satisfies T(n,0)=1, T(n+1,k+1) = sum(i=0,n, sum(j=0,k, T(n-i,k-j)*T(i,j) )), such that the top row and diagonal are equal: T(0,k)=T(k,k)=A088159(k). 2
1, 1, 1, 4, 1, 1, 25, 2, 2, 1, 202, 9, 4, 3, 1, 1944, 58, 14, 8, 4, 1, 21356, 470, 80, 25, 14, 5, 1, 261213, 4492, 604, 124, 46, 22, 6, 1, 3500132, 48841, 5520, 862, 202, 82, 32, 7, 1, 50800750, 590790, 58246, 7468, 1272, 342, 138, 44, 8, 1, 791987356, 7831542 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Table of n, a(n) for n=0..56.

EXAMPLE

Table begins:

1.1..4..25.202.1944.21356.261213...

1.1..2...9..58..470..4492..48841...

1.2..4..14..80..604..5520..58246...

1.3..8..25.124..862..7468..75929...

1.4.14..46.202.1272.10340.100658...

1.5.22..82.342.1944.14664.135690...

1.6.32.138.586.3074.21356.186340...

1.7.44.219.990.4984.31980.261213...

...

CROSSREFS

Cf. A088159, A088160.

Sequence in context: A113716 A220652 A169654 * A136449 A209427 A140805

Adjacent sequences:  A088155 A088156 A088157 * A088159 A088160 A088161

KEYWORD

nonn,tabl

AUTHOR

Paul D. Hanna, Sep 20 2003

STATUS

approved

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Last modified February 25 11:54 EST 2020. Contains 332233 sequences. (Running on oeis4.)