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A163254
Array of the nonsquares; the columns satisfy c(n)=c(n-1)+c(n-2)-c(n-3)+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
OFFSET
1,1
COMMENTS
This is the array remaining after row 1 is expelled from the array in A163253.
LINKS
FORMULA
Let S(n,k) for the k-th term in the n-th row.
if n is odd, then S(n,k)=k^2+(n-1)k+(n^2+3)/4;
if n is even, then S(n,k)=k^2+(n-1)k+(n^2)/4.
EXAMPLE
Corner:
2....5...10...17...26
3....7...13...21...31
6...11...18...27...38
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Clark Kimberling, Jul 23 2009
STATUS
approved