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A037133 (nextprime(5^n)-nextprime(2^n))/2. 0
0, 2, 12, 58, 307, 1550, 7781, 39003, 195195, 976315, 4882299, 24413043, 122068292, 610347461, 3051749613, 15258772698, 76293912556, 381469661013, 1907348501745, 9536742901936, 47683715296045, 238418578052990, 1192092893410662, 5960464473344773 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..23.

FORMULA

a(n) = A037132(n) / 2. - Sean A. Irvine, Dec 09 2020

CROSSREFS

Sequence in context: A285364 A282435 A001758 * A009618 A143770 A062478

Adjacent sequences:  A037130 A037131 A037132 * A037134 A037135 A037136

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Sean A. Irvine, Dec 09 2020

STATUS

approved

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Last modified October 27 00:02 EDT 2021. Contains 348270 sequences. (Running on oeis4.)