

A163254


Array of the nonsquares; the columns satisfy c(n)=c(n1)+c(n2)c(n3)+1.


5



2, 5, 3, 10, 7, 6, 17, 13, 11, 8, 26, 21, 18, 14, 12, 37, 31, 27, 22, 19, 15, 50, 43, 38, 32, 28, 23, 20, 65, 57, 51, 44, 39, 33, 29, 24, 82, 73, 66, 58, 52, 45, 40, 34, 30, 101, 91, 83, 74, 67, 59, 53, 46, 41, 35, 122, 111, 102, 92, 84, 75, 68, 60, 54
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OFFSET

1,1


COMMENTS

This is the array remaining after row 1 is expelled from the array in A163253.


LINKS

Table of n, a(n) for n=1..64.
Clark Kimberling, Doubly interspersed sequences, double interspersions and fractal sequences, The Fibonacci Quarterly 48 (2010) 1320.


FORMULA

Let S(n,k) for the kth term in the nth row.
if n is odd, then S(n,k)=k^2+(n1)k+(n^2+3)/4;
if n is even, then S(n,k)=k^2+(n1)k+(n^2)/4.


EXAMPLE

Corner:
2....5...10...17...26
3....7...13...21...31
6...11...18...27...38


CROSSREFS

Cf. A000290, A163253, A163255, A163256, A163257, A163258.
Sequence in context: A191855 A064664 A078386 * A277696 A143121 A101492
Adjacent sequences: A163251 A163252 A163253 * A163255 A163256 A163257


KEYWORD

nonn,tabl


AUTHOR

Clark Kimberling, Jul 23 2009


STATUS

approved



