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A268687 a(n) = MAX(g_k(n)) where g_k(n) is the function defined in A266202. 2
0, 1, 2, 3, 11, 31, 191, 1023 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..7.

EXAMPLE

g_1(4) = b_2(4)-1 = b_2(2^2)-1 = 3^2-1 = 8;

g_2(4) = b_3(2*3+2)-1 = 2*4 + 2-1 = 9;

g_3(4) = b_4(2*4 + 1 ) -1 = 2*5 + 1-1 = 10;

g_4(4) = b_5(2*5) -1= 2*6 - 1 = 11;

g_5(4) = b_6(6+5)-1 = 7+5-1 = 11;

g_6(4) = b_7(7+4)-1 = 8+4-1 = 11;

g_7(4) = b_8(8+3)-1 = 9+3-1 = 11;

g_8(4) = b_9(9+2)-1 = 10+2-1 = 11;

g_9(4) = b_10(10+1)-1 = 11+1-1 = 11;

g_10(4) = b_11(11)-1 = 12-1 = 11;

g_11(4) = b_12(11)-1 = 11-1 = 10;

g_12(4) = b_13(10)-1 = 10-1 = 9;

g_13(4) = b_14(9)-1 = 9-1 = 8;

g_21(4) = 0;

So a(4)=11.

PROG

(PARI) a(n) = {vg = []; ok = 1; ns = 0; while(ok, newg = g(ns, n); vg = concat(vg, newg); if (newg <= 0, ok = 0); ns++; ); vmax = vecmax(vg); vmax; } \\ Michel Marcus, Apr 04 2016

CROSSREFS

Cf. A266203, A268688, A268689.

Sequence in context: A235625 A032357 A144056 * A062630 A296005 A159458

Adjacent sequences:  A268684 A268685 A268686 * A268688 A268689 A268690

KEYWORD

nonn,more

AUTHOR

Natan Arie' Consigli, Apr 02 2016

EXTENSIONS

a(6)-a(7) from Michel Marcus, Apr 04 2016

STATUS

approved

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Last modified February 21 14:29 EST 2018. Contains 299414 sequences. (Running on oeis4.)