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 A245093 Triangle read by rows in which row n lists the first n terms of A000203. 8
 1, 1, 3, 1, 3, 4, 1, 3, 4, 7, 1, 3, 4, 7, 6, 1, 3, 4, 7, 6, 12, 1, 3, 4, 7, 6, 12, 8, 1, 3, 4, 7, 6, 12, 8, 15, 1, 3, 4, 7, 6, 12, 8, 15, 13, 1, 3, 4, 7, 6, 12, 8, 15, 13, 18, 1, 3, 4, 7, 6, 12, 8, 15, 13, 18, 12, 1, 3, 4, 7, 6, 12, 8, 15, 13, 18, 12, 28 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS Reluctant sequence of A000203. Row sums give A024916. Has a symmetric representation - for more information see A237270. LINKS Reinhard Zumkeller, Rows n = 1..125 of triangle, flattened FORMULA T(n,k) = A000203(k), 1<=k<=n. EXAMPLE Triangle begins: 1; 1, 3; 1, 3, 4; 1, 3, 4, 7; 1, 3, 4, 7, 6; 1, 3, 4, 7, 6, 12; 1, 3, 4, 7, 6, 12, 8; 1, 3, 4, 7, 6, 12, 8, 15; 1, 3, 4, 7, 6, 12, 8, 15, 13; 1, 3, 4, 7, 6, 12, 8, 15, 13, 18; 1, 3, 4, 7, 6, 12, 8, 15, 13, 18, 12; 1, 3, 4, 7, 6, 12, 8, 15, 13, 18, 12, 28; PROG (Haskell) import Data.List (inits) a245093 n k = a245093_tabl !! (n-1) !! (k-1) a245093_row n = a245093_tabl !! (n-1) a245093_tabl = tail \$ inits \$ a000203_list -- Reinhard Zumkeller, Dec 12 2015 CROSSREFS Cf. A000203, A024916, A027293, A104765, A140207, A221529, A237270, A237593, A245099, A265652. Sequence in context: A095709 A076152 A107638 * A104765 A308690 A329512 Adjacent sequences: A245090 A245091 A245092 * A245094 A245095 A245096 KEYWORD nonn,tabl,look AUTHOR Omar E. Pol, Jul 15 2014 STATUS approved

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Last modified June 13 22:21 EDT 2024. Contains 373391 sequences. (Running on oeis4.)