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A109182 Numbers n such that n-th and (n+1)-th primes have the same sum of their digits squared. 1
293, 2106, 2161, 2763, 3698, 3793, 3795, 3812, 3922, 3959, 3995, 4000, 4205, 4224, 4260, 4728, 4953, 5065, 5283, 5617, 5700, 5751, 5932, 6326, 6333, 6422, 6539, 6623, 7375, 7475, 7501, 7533, 7542, 8306, 8568, 8751, 8777, 8994, 9102, 9259, 9354, 9480 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Most of the pairs of successive primes have also the same set of digits, those which the different sets of digits in A109183, first relative n's are 3795,3995,10234,17125,18134,19322,20979.

LINKS

Table of n, a(n) for n=1..42.

EXAMPLE

prime(293)=1913, prime(294)=1931, both have the same sum of digits squared 1^2+9^2+1^2+3^2=1^2+9^2+3^2+1^2=92.

CROSSREFS

Cf. A109183.

Sequence in context: A217182 A109562 A023305 * A241047 A085502 A108828

Adjacent sequences:  A109179 A109180 A109181 * A109183 A109184 A109185

KEYWORD

base,nonn

AUTHOR

Zak Seidov, Jun 21 2005

STATUS

approved

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Last modified August 20 11:27 EDT 2017. Contains 290835 sequences.