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A191971 Square array A(i,j) related to the square array T(i,j) of A192062 1
2, 2, 1, 2, 1, 2, 2, 1, 3, 3, 2, 1, 4, 4, 2, 2, 1, 5, 5, 7, 5, 2, 1, 6, 6, 14, 11, 2, 2, 1, 7, 7, 23, 19, 18, 7, 2, 1, 8, 8, 34, 29, 52, 29, 2, 2, 1, 9, 9, 47, 41, 110, 71, 47, 9, 2, 1, 10, 10, 62, 55, 198, 139, 194, 76, 2, 2, 1, 11, 11, 79, 71, 322, 239, 527, 265, 123, 11, 2, 1, 12, 12, 98, 89, 488, 377, 1154, 666, 724, 199, 2 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

A(i,j) * T(i,j) of A192062 equals T(2*i,j) of A192062. Here j goes from 0 to 12

LINKS

Table of n, a(n) for n=0..90.

FORMULA

Each column is defined as follows. A(0,j) = 2, A(1,j) = 1, For i>0 A(2*i,j) = j*A(2*i-1,j)+A(2*i-2,j), A(2*i+1,j) = A(2*i,j)+A(2*i-1,j).

For i > 1, A(i+2,j) = A(i,j)*(j+2) - A(i-2,j)

A(6*i,j) = A(2*i,j)*(A(4*i,j)-1)

A(6*i+3,j) = A(2*i+1,j)*(A(4*i+2,j)+1)

EXAMPLE

A(3,1) = 4

CROSSREFS

A192062

Sequence in context: A119469 A127439 A218775 * A156051 A091267 A003643

Adjacent sequences:  A191968 A191969 A191970 * A191972 A191973 A191974

KEYWORD

nonn,tabl

AUTHOR

Kenneth J Ramsey, Jul 07 2011

STATUS

approved

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Last modified February 23 06:00 EST 2020. Contains 332159 sequences. (Running on oeis4.)