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 A140740 Triangle read by rows: T(n,n) = 1 and for k with 1 <= k < n: T(n+1,k) = T(n,k) + T(n - n mod k, k). 6
 1, 2, 1, 4, 2, 1, 8, 3, 2, 1, 16, 6, 3, 2, 1, 32, 9, 4, 3, 2, 1, 64, 18, 8, 4, 3, 2, 1, 128, 27, 12, 5, 4, 3, 2, 1, 256, 54, 16, 10, 5, 4, 3, 2, 1, 512, 81, 32, 15, 6, 5, 4, 3, 2, 1, 1024, 162, 48, 20, 12, 6, 5, 4, 3, 2, 1, 2048, 243, 64, 25, 18, 7, 6, 5, 4, 3, 2, 1, 4096, 486, 128, 50, 24 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Central terms: T(2*n-1,n)=n; T(2*n,n)=n+1; T(2*n,n+1)=n; T(n,k) = n-k+1, for k with n/2 <= k <= n; sums of rows: A140741; T(n,1) = A000079(n-1); T(n,2) = A038754(n-2) for n>1; T(n,3) = A133464(n-3) for n>2; T(n,4) = A140730(n-4) for n>3; T(n,9) = A037124(n-9) for n>8. LINKS EXAMPLE .................................... 1 .................................. 2 . 1 .............................. 2^2 . 2 . 1 .......................... 2^3 ... 3 . 2 . 1 ...................... 2^4 ... 2*3 . 3 . 2 . 1 .................. 2^5 ... 3^2 ... 4 . 3 . 2 . 1 .............. 2^6 .. 2*3^2 .. 2*4 . 4 . 3 . 2 . 1 .......... 2^7 ... 3^3 ... 3*4 ... 5 . 4 . 3 . 2 . 1 ...... 2^8 .. 2*3^3 ... 4^2 .. 2*5 . 5 . 4 . 3 . 2 . 1 ... 2^9 ... 3^4 .. 2*4^2 . 3*5 ... 6 . 5 . 4 . 3 . 2 . 1 2^10 . 2*3^4 . 3*4^2 .. 4*5 .. 2*6 . 6 . 5 . 4 . 3 . 2 . 1. CROSSREFS Sequence in context: A135287 A290650 A089606 * A091918 A177953 A138895 Adjacent sequences:  A140737 A140738 A140739 * A140741 A140742 A140743 KEYWORD nonn,tabl AUTHOR Reinhard Zumkeller, May 26 2008 STATUS approved

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Last modified January 22 04:27 EST 2020. Contains 331133 sequences. (Running on oeis4.)