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 A245235 Repeat 2^(n*(n+1)/2) n+1 times. 0
 1, 2, 2, 8, 8, 8, 64, 64, 64, 64, 1024, 1024, 1024, 1024, 1024, 32768, 32768, 32768, 32768, 32768, 32768, 2097152, 2097152, 2097152, 2097152, 2097152, 2097152, 2097152, 268435456, 268435456, 268435456, 268435456, 268435456, 268435456, 268435456, 268435456 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS For a(n), the successive exponents of 2 are 0, 1, 1, 3, 3, 3,... = A057944(n). LINKS FORMULA a(n) = 2^n/A059268(n). T(n, k) = 2^(n*(n+1)/2), 0 <= k <= n. - Michel Marcus, Jul 17 2014 EXAMPLE n+1 times repeated 2^(n*(n+1)/2)= 1, 2, 8, 64, 1024,... = A139685(n). By the formula: a(0)=1/1=1, a(1)=2/1=2, a(2)=4/2=2, a(3)=8/1=8, a(4)=16/2=8,... As triangle:    1,    2,    2,    8,    8,    8,   64,   64,   64,   64, 1024, 1024, 1024, 1024, 1024, etc. Row sums: 1, 4, 24, 256,... = A095340. MATHEMATICA Table[2^(n*(n+1)/2), {n, 0, 7}, {n+1}] // Flatten (* Jean-François Alcover, Jul 15 2014 *) CROSSREFS Cf. A000079, A006125, A057944, A059268, A095340, A123903, A139685. Sequence in context: A330763 A138102 A187791 * A151924 A268342 A058524 Adjacent sequences:  A245232 A245233 A245234 * A245236 A245237 A245238 KEYWORD nonn,tabl AUTHOR Paul Curtz, Jul 14 2014 STATUS approved

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Last modified February 24 07:45 EST 2020. Contains 332199 sequences. (Running on oeis4.)