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A195843 Triangle read by rows which arises from A195833, in the same way as A175003 arises from A195310. Column k starts at row A195313(k). 7
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 3, 1, 4, 1, -1, 4, 1, -1, 4, 1, -1, 4, 1, -1, 4, 1, -1, 4, 1, -1, 4, 1, -1, 4, 2, -1, 5, 3, -1, 7, 4, -1, 10, 4, -2, 12, 4, -3, 13, 4, -4, 13, 4, -4, 13, 4, -4, 13, 4, -4, 13, 4, -4, 13, 5, -4, 14, 7, -4, -1 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,12

COMMENTS

The sum of terms of row n is equal to the leftmost term of row n+1. This sequence is related to the generalized tridecagonal numbers A195313, A195833 and A196933 in the same way as A175003 is related to the generalized pentagonal numbers A001318, A195310 and A000041. See comments in A195825.

LINKS

Table of n, a(n) for n=1..73.

EXAMPLE

Written as a triangle:

1;

1;

1;

1;

1;

1;

1;

1;

1;

1, 1;

2, 1;

3, 1;

4, 1, -1;

4, 1, -1;

4, 1, -1;

4, 1, -1;

4, 1, -1;

4, 1, -1;

4, 1, -1;

4, 2, -1;

5, 3, -1;

7, 4, -1;

CROSSREFS

Row sums give A196933.

Cf. A001082, A175003, A195828, A195836, A195837, A195838, A195839, A195840, A195841, A195842.

Sequence in context: A135591 A114897 A210954 * A195842 A195841 A195840

Adjacent sequences:  A195840 A195841 A195842 * A195844 A195845 A195846

KEYWORD

sign,tabf

AUTHOR

Omar E. Pol, Sep 24 2011

STATUS

approved

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Last modified December 15 22:02 EST 2019. Contains 330012 sequences. (Running on oeis4.)