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A127474 Triangle, square of A054522. 1
1, 2, 1, 3, 0, 4, 4, 3, 0, 4, 5, 0, 0, 0, 16, 6, 3, 8, 0, 0, 4, 7, 0, 0, 0, 0, 0, 36, 8, 7, 0, 12, 0, 0, 0, 16, 9, 0, 16, 0, 0, 0, 0, 0, 36, 10, 5, 0, 0, 32, 0, 0, 0, 0, 16 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Right border = A127473, squares of phi(n) terms. Row sums = A057660: (1, 3, 7, 11, 21,...)

LINKS

Table of n, a(n) for n=1..55.

FORMULA

(A054522)^2 as an infinite lower triangular matrix.

EXAMPLE

First few rows of the triangle are:

1;

2, 1;

3, 0, 4;

4, 3, 0, 4;

5, 0, 0, 0, 16;

6, 3, 8, 0, 0, 4;

7, 0, 0, 0, 0, 0, 36;

8, 7, 0, 12, 0, 0, 0, 16;

...

CROSSREFS

Cf. A127473, A057660, A054522.

Sequence in context: A070817 A231347 A180988 * A326400 A281617 A280544

Adjacent sequences:  A127471 A127472 A127473 * A127475 A127476 A127477

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, Jan 15 2007

STATUS

approved

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Last modified April 11 12:00 EDT 2021. Contains 342886 sequences. (Running on oeis4.)